Dredge-bucket coupling.



No. 812,518. PATENTED FEB. 13

' H. G. PEAKE & J. HENDERSON.

DREDGE BUCKET COUPLING.

APPLICATION FILED MAY4. 1905.

- struction it is common to em HARRY G. PEAKE AND JAMES HENDERSON, OF OROVILLE, CALIFORNIA,

ASSIGNORS TO W. P. HAMMON,

OF OROVILLE, CALIFORNIA.

DREDGE-BUCKET COUPLING.

Specification of Letters Patent.

Patented Feb. 13, 1906.

Application filed May 4. 1905. Serial No. 258 ,853.

To all whmn it may concern:

Be it known that we, HARRY G. PEAKE and JAMES HENDERSON, citizens of theUnited States, residing at Oroville, in the county of Butte and State of California, have invented new and useful Improvements in Dredger- Bucket Couplings, of which the following is a specification.

Our invention relates to a coupling device for dredge-buckets which are used for diggmg purposes.

It consists in the novel construction of the coupling-pin and block or bushing, and it also comprises combinations of parts and details of construction which will be more fully explained by reference to the accompanying drawings, in which- Figure 1 is a side view of two bucket-bot toms, showing connection by our im roved coupling-pin. Fig. 2 is a plan view 0 same. F g. 3 is a section on line X X of Fig. 2. Fig. 4 1s a side elevation of one of the blocks 2 detached. Fig. 5 is an end view of Fig. 4. Fig. 6 is a detail of the pin 3, showing a portion of the head broken away.

In the construction of endless-chain buckets which are employed for digging beneath the surface of water, as in dredging for varlous purposes, the buckets are connected together in an endless chain and passed over tumblers suitably ournaled at the upper and lower ends of a frame or ladder which carries this portion of the structure. In this conloy a segmental bushing in one part or eye 0 the bucket connect on and a pin going through the connectmg parts and turnable in this bushing. The gritty matter which is always present in the conditions under which such dredges operate rapidly wears these connections.

It is the object of our invention to overcome this difiiculty.

As shown in the drawings, the buckets have eyes A and B, which overlap and through which connection is made to unite the buckets into a chain. I

2 is a block which is made of any suitable and hard material, such as manganese steel. This block is set in the rear eye of the bucket and has its front surface rolling, as shown. The pin 3 is secured in the front eyes of the succeeding bucket and has its rear face also rolling, so that it forms contact with the rolling surface of the block. The pin is suitably shown at 3, and this means of rivet or other working out, the rivet passing through the head of the pin and the front eye of the bucket. The eyes into which the block and the pin are fitted are sufficiently elongated to receive these parts and allow them to Work together without unduly lessening the size of or weakening the pin.

It will be seen that in assing over the tumbler instead of the pin s idin and grinding in the bushing as in the old is a rolling action of the two which tially relieves them of all wear.

The blocks 2 have projections 2 opposite the bearin -faces, and these projections enter corresponding recesses 2 in the eye, in which the blocks rest. The head of the pin 3 is head is grooved or slotted, as shown at 3 and a bar is fitted into the slot and extends into corresponding grooves in the sides of the eye. Through this bar and the head arivet maypassinto the eye to secure them together.

Having thus described our invention, what we claim, and desire to secure byLetters Patent isl An antifrictional contact-surface consisting of a block fixed in one of the. connected parts and a pin fixed in the other, said block and pin having surfaces of contact adapted to rock upon each other.

2. The combination in a dredge of buckets having eyes at front and rear, pins extending through said eyes and fixed therein, said pins having rolling contact-surfaces and blocks fixed in the opposing eyes having similar surfaces upon whlch the in has a bearing.

3. In a dredge, buc ets having eyes at the front and rear, blocks set in the rear eye of each bucket having the front surface made higher at the center than at the edges, pins extending through the front eyes of the buckets havin correspondin surfaces contacting and ro ling upon the block-surfaces, and means for securing said pins in the eyes.

In testimony whereof we have hereunto set our hands in presence of two subscribing witnesses.

locked in the eyes by means to prevent its esign there substan- HARRY G. PEAKE. JAMES HENDERSON.

Witnesses J. E. CoRBIN, A. E. BOYNTON. 

